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// Copyright (C) 2010, Vaclav Haisman. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modifica-
// tion, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
// DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <log4cplus/helpers/stringhelper.h>
#include <log4cplus/helpers/loglog.h>
#include <cstdlib>
#include <cstring>
#include <cwchar>
#include <cassert>
#include <vector>
namespace log4cplus
{
namespace helpers
{
void clear_mbstate (std::mbstate_t & mbs);
#if defined (LOG4CPLUS_WORKING_C_LOCALE)
static
void
tostring_internal (std::string & result, wchar_t const * src, std::size_t size)
{
std::vector<char> result_buf (MB_CUR_MAX);
wchar_t const * src_it = src;
wchar_t const * const src_end_it = src + size;
std::mbstate_t mbs;
clear_mbstate (mbs);
result.clear ();
result.reserve (size + size / 3 + 1);
while (src_it != src_end_it)
{
std::size_t ret = std::wcrtomb (&result_buf[0], *src_it, &mbs);
if (ret == static_cast<std::size_t>(-1))
{
result.push_back ('?');
clear_mbstate (mbs);
++src_it;
}
else
{
result.append (result_buf.begin (), result_buf.begin () + ret);
++src_it;
}
}
}
std::string
tostring (const std::wstring & src)
{
std::string ret;
tostring_internal (ret, src.c_str (), src.size ());
return ret;
}
std::string
tostring (wchar_t const * src)
{
assert (src);
std::string ret;
tostring_internal (ret, src, std::wcslen (src));
return ret;
}
static
void
towstring_internal (std::wstring & result, char const * src, std::size_t size)
{
char const * src_it = src;
char const * const src_end_it = src + size;
std::mbstate_t mbs;
clear_mbstate (mbs);
result.clear ();
result.reserve (size);
while (src_it != src_end_it)
{
std::size_t const n = size - (src - src_it);
wchar_t result_char;
std::size_t ret = std::mbrtowc (&result_char, src_it, n, &mbs);
if (ret > 0)
{
result.push_back (result_char);
src_it += ret;
}
else
{
result.push_back (ret == 0 ? L'\0' : L'?') ;
clear_mbstate (mbs);
++src_it;
}
}
}
std::wstring
towstring (const std::string& src)
{
std::wstring ret;
towstring_internal (ret, src.c_str (), src.size ());
return ret;
}
std::wstring
towstring (char const * src)
{
assert (src);
std::wstring ret;
towstring_internal (ret, src, std::strlen (src));
return ret;
}
#endif // LOG4CPLUS_WORKING_C_LOCALE
} // namespace helpers
} // namespace log4cplus
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